[He still can't stop thinking about his friend Akito losing the guy he loved and seeing Rei in that reaction. So even though Rei's out, he has a question he feels he needs answered right right now now.]
Hey Rei-chan, I can't remember if you told me but... when did we start dating?
Text 4/16/14
Hey Rei-chan, I can't remember if you told me but... when did we start dating?